As studying stoic, one of the many things taught to us is to focus on the present, take in what's directly in front of us and not let the mind wander forward towards the future nor backwards to the past.
Easier said than done.
Take for example driving to work. As soon as I get into the car, I start thinking about what's ahead waiting for me once I get there. Try as I may to focus on enjoying the drive, taking in the weather, being grateful for the sublime engineering that is the Mazda MX-5, my mind inevitably skips ahead to the workplace. Being in the moment takes constant practice, and some days are more difficult than others.
A good trick to alleviate some of the impulses is to never procrastinate at work - and at home. Whatever items need to be done, I try to complete it as soon as possible - don't wait. Otherwise the unfinished things will compound the tendencies to distract from the present, especially those of the workplace.
I don't suppose it'll ever be perfect, this 'being present' business, but getting near it is good goal because my anxiety levels have gone down commensurately.